Name Info Provider Link
subscription/membership/fee required HighWire https://ijgc.bmj.com/lookup/pmidlookup?view=long&pmid=21436708
Complementary and Integrative Medicine free resource MedlinePlus Health Information https://medlineplus.gov/complementaryandintegrativemedicine.html
subscription/membership/fee required Ovid Technologies, Inc. http://ovidsp.ovid.com/ovidweb.cgi?T=JS&PAGE=linkout&SEARCH=21436708.ui